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Beating the spectroscopic Rayleigh limit via post-processed heterodyne detection
Wiktor Krokosz, Mateusz Mazelanik, Michał Lipka +4
Quantum-inspired superresolution methods surpass the Rayleigh limit in imaging, or the analogous Fourier limit in spectroscopy. This is achieved by carefully extracting the informa…
Continuous-variable quantum key distribution over multispan links employing phase-insensitive and phase-sensitive amplifiers
Michele N. Notarnicola, Filip Cieciuch, Marcin Jarzyna
Transmission losses through optical fibers are one of the main obstacles preventing both long-distance quantum communications and continuous-variable quantum key distribution. Opti…
Optimizing state-discrimination receivers for continuous-variable quantum key distribution over a wiretap channel
Michele N. Notarnicola, Marcin Jarzyna, Stefano Olivares +1
We address a continuous-variable quantum key distribution (CV-QKD) protocol employing quaternary phase-shift-keying (QPSK) of coherent states and a non-Gaussian measurement inspire…